mirror of
https://github.com/XTLS/Xray-core.git
synced 2024-11-22 04:39:19 +02:00
VMess AEAD based packet length
(cherry picked from commit 08221600082a79376bdc262f2ffec1a3129ae98d)
This commit is contained in:
parent
707efd6d12
commit
ff35118af5
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@ -38,6 +38,8 @@ const (
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RequestOptionChunkMasking bitmask.Byte = 0x04
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RequestOptionGlobalPadding bitmask.Byte = 0x08
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RequestOptionAuthenticatedLength bitmask.Byte = 0x10
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)
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type RequestHeader struct {
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@ -15,9 +15,10 @@ import (
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)
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type VMessAccount struct {
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ID string `json:"id"`
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AlterIds uint16 `json:"alterId"`
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Security string `json:"security"`
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ID string `json:"id"`
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AlterIds uint16 `json:"alterId"`
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Security string `json:"security"`
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Experiments string `json:"experiments"`
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}
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// Build implements Buildable
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@ -43,6 +44,7 @@ func (a *VMessAccount) Build() *vmess.Account {
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SecuritySettings: &protocol.SecurityConfig{
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Type: st,
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},
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TestsEnabled: a.Experiments,
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}
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}
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@ -1,6 +1,8 @@
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package vmess
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import (
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"strings"
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"github.com/xtls/xray-core/common/dice"
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"github.com/xtls/xray-core/common/protocol"
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"github.com/xtls/xray-core/common/uuid"
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@ -14,6 +16,8 @@ type MemoryAccount struct {
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AlterIDs []*protocol.ID
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// Security type of the account. Used for client connections.
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Security protocol.SecurityType
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AuthenticatedLengthExperiment bool
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}
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// AnyValidID returns an ID that is either the main ID or one of the alternative IDs if any.
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@ -41,9 +45,14 @@ func (a *Account) AsAccount() (protocol.Account, error) {
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return nil, newError("failed to parse ID").Base(err).AtError()
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}
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protoID := protocol.NewID(id)
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var AuthenticatedLength bool
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if strings.Contains(a.TestsEnabled, "AuthenticatedLength") {
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AuthenticatedLength = true
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}
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return &MemoryAccount{
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ID: protoID,
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AlterIDs: protocol.NewAlterIDs(protoID, uint16(a.AlterId)),
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Security: a.SecuritySettings.GetSecurityType(),
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ID: protoID,
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AlterIDs: protocol.NewAlterIDs(protoID, uint16(a.AlterId)),
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Security: a.SecuritySettings.GetSecurityType(),
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AuthenticatedLengthExperiment: AuthenticatedLength,
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}, nil
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}
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@ -7,6 +7,8 @@ import (
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"github.com/xtls/xray-core/common"
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"github.com/xtls/xray-core/common/crypto"
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"golang.org/x/crypto/sha3"
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)
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@ -116,3 +118,11 @@ func (s *ShakeSizeParser) NextPaddingLen() uint16 {
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func (s *ShakeSizeParser) MaxPaddingLen() uint16 {
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return 64
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}
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type AEADSizeParser struct {
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crypto.AEADChunkSizeParser
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}
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func NewAEADSizeParser(auth *crypto.AEADAuthenticator) *AEADSizeParser {
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return &AEADSizeParser{crypto.AEADChunkSizeParser{Auth: auth}}
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}
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@ -171,6 +171,17 @@ func (c *ClientSession) EncodeRequestBody(request *protocol.RequestHeader, write
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NonceGenerator: GenerateChunkNonce(c.requestBodyIV[:], uint32(aead.NonceSize())),
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AdditionalDataGenerator: crypto.GenerateEmptyBytes(),
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}
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if request.Option.Has(protocol.RequestOptionAuthenticatedLength) {
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AuthenticatedLengthKey := vmessaead.KDF16(c.requestBodyKey[:], "auth_len")
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AuthenticatedLengthKeyAEAD := crypto.NewAesGcm(AuthenticatedLengthKey)
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lengthAuth := &crypto.AEADAuthenticator{
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AEAD: AuthenticatedLengthKeyAEAD,
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NonceGenerator: GenerateChunkNonce(c.requestBodyIV[:], uint32(aead.NonceSize())),
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AdditionalDataGenerator: crypto.GenerateEmptyBytes(),
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}
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sizeParser = NewAEADSizeParser(lengthAuth)
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}
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return crypto.NewAuthenticationWriter(auth, sizeParser, writer, request.Command.TransferType(), padding)
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case protocol.SecurityType_CHACHA20_POLY1305:
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aead, err := chacha20poly1305.New(GenerateChacha20Poly1305Key(c.requestBodyKey[:]))
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@ -181,6 +192,18 @@ func (c *ClientSession) EncodeRequestBody(request *protocol.RequestHeader, write
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NonceGenerator: GenerateChunkNonce(c.requestBodyIV[:], uint32(aead.NonceSize())),
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AdditionalDataGenerator: crypto.GenerateEmptyBytes(),
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}
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if request.Option.Has(protocol.RequestOptionAuthenticatedLength) {
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AuthenticatedLengthKey := vmessaead.KDF16(c.requestBodyKey[:], "auth_len")
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AuthenticatedLengthKeyAEAD, err := chacha20poly1305.New(GenerateChacha20Poly1305Key(AuthenticatedLengthKey))
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common.Must(err)
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lengthAuth := &crypto.AEADAuthenticator{
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AEAD: AuthenticatedLengthKeyAEAD,
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NonceGenerator: GenerateChunkNonce(c.requestBodyIV[:], uint32(aead.NonceSize())),
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AdditionalDataGenerator: crypto.GenerateEmptyBytes(),
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}
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sizeParser = NewAEADSizeParser(lengthAuth)
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}
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return crypto.NewAuthenticationWriter(auth, sizeParser, writer, request.Command.TransferType(), padding)
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default:
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panic("Unknown security type.")
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@ -312,6 +335,17 @@ func (c *ClientSession) DecodeResponseBody(request *protocol.RequestHeader, read
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NonceGenerator: GenerateChunkNonce(c.responseBodyIV[:], uint32(aead.NonceSize())),
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AdditionalDataGenerator: crypto.GenerateEmptyBytes(),
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}
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if request.Option.Has(protocol.RequestOptionAuthenticatedLength) {
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AuthenticatedLengthKey := vmessaead.KDF16(c.requestBodyKey[:], "auth_len")
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AuthenticatedLengthKeyAEAD := crypto.NewAesGcm(AuthenticatedLengthKey)
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lengthAuth := &crypto.AEADAuthenticator{
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AEAD: AuthenticatedLengthKeyAEAD,
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NonceGenerator: GenerateChunkNonce(c.requestBodyIV[:], uint32(aead.NonceSize())),
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AdditionalDataGenerator: crypto.GenerateEmptyBytes(),
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}
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sizeParser = NewAEADSizeParser(lengthAuth)
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}
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return crypto.NewAuthenticationReader(auth, sizeParser, reader, request.Command.TransferType(), padding)
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case protocol.SecurityType_CHACHA20_POLY1305:
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aead, _ := chacha20poly1305.New(GenerateChacha20Poly1305Key(c.responseBodyKey[:]))
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@ -321,6 +355,18 @@ func (c *ClientSession) DecodeResponseBody(request *protocol.RequestHeader, read
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NonceGenerator: GenerateChunkNonce(c.responseBodyIV[:], uint32(aead.NonceSize())),
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AdditionalDataGenerator: crypto.GenerateEmptyBytes(),
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}
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if request.Option.Has(protocol.RequestOptionAuthenticatedLength) {
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AuthenticatedLengthKey := vmessaead.KDF16(c.requestBodyKey[:], "auth_len")
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AuthenticatedLengthKeyAEAD, err := chacha20poly1305.New(GenerateChacha20Poly1305Key(AuthenticatedLengthKey))
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common.Must(err)
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lengthAuth := &crypto.AEADAuthenticator{
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AEAD: AuthenticatedLengthKeyAEAD,
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NonceGenerator: GenerateChunkNonce(c.requestBodyIV[:], uint32(aead.NonceSize())),
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AdditionalDataGenerator: crypto.GenerateEmptyBytes(),
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}
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sizeParser = NewAEADSizeParser(lengthAuth)
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}
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return crypto.NewAuthenticationReader(auth, sizeParser, reader, request.Command.TransferType(), padding)
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default:
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panic("Unknown security type.")
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@ -362,6 +362,17 @@ func (s *ServerSession) DecodeRequestBody(request *protocol.RequestHeader, reade
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NonceGenerator: GenerateChunkNonce(s.requestBodyIV[:], uint32(aead.NonceSize())),
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AdditionalDataGenerator: crypto.GenerateEmptyBytes(),
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}
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if request.Option.Has(protocol.RequestOptionAuthenticatedLength) {
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AuthenticatedLengthKey := vmessaead.KDF16(s.requestBodyKey[:], "auth_len")
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AuthenticatedLengthKeyAEAD := crypto.NewAesGcm(AuthenticatedLengthKey)
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lengthAuth := &crypto.AEADAuthenticator{
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AEAD: AuthenticatedLengthKeyAEAD,
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NonceGenerator: GenerateChunkNonce(s.requestBodyIV[:], uint32(aead.NonceSize())),
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AdditionalDataGenerator: crypto.GenerateEmptyBytes(),
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}
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sizeParser = NewAEADSizeParser(lengthAuth)
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}
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return crypto.NewAuthenticationReader(auth, sizeParser, reader, request.Command.TransferType(), padding)
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case protocol.SecurityType_CHACHA20_POLY1305:
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@ -372,6 +383,18 @@ func (s *ServerSession) DecodeRequestBody(request *protocol.RequestHeader, reade
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NonceGenerator: GenerateChunkNonce(s.requestBodyIV[:], uint32(aead.NonceSize())),
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AdditionalDataGenerator: crypto.GenerateEmptyBytes(),
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}
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if request.Option.Has(protocol.RequestOptionAuthenticatedLength) {
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AuthenticatedLengthKey := vmessaead.KDF16(s.requestBodyKey[:], "auth_len")
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AuthenticatedLengthKeyAEAD, err := chacha20poly1305.New(GenerateChacha20Poly1305Key(AuthenticatedLengthKey))
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common.Must(err)
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lengthAuth := &crypto.AEADAuthenticator{
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AEAD: AuthenticatedLengthKeyAEAD,
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NonceGenerator: GenerateChunkNonce(s.requestBodyIV[:], uint32(aead.NonceSize())),
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AdditionalDataGenerator: crypto.GenerateEmptyBytes(),
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}
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sizeParser = NewAEADSizeParser(lengthAuth)
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}
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return crypto.NewAuthenticationReader(auth, sizeParser, reader, request.Command.TransferType(), padding)
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default:
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@ -480,6 +503,17 @@ func (s *ServerSession) EncodeResponseBody(request *protocol.RequestHeader, writ
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NonceGenerator: GenerateChunkNonce(s.responseBodyIV[:], uint32(aead.NonceSize())),
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AdditionalDataGenerator: crypto.GenerateEmptyBytes(),
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}
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if request.Option.Has(protocol.RequestOptionAuthenticatedLength) {
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AuthenticatedLengthKey := vmessaead.KDF16(s.requestBodyKey[:], "auth_len")
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AuthenticatedLengthKeyAEAD := crypto.NewAesGcm(AuthenticatedLengthKey)
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lengthAuth := &crypto.AEADAuthenticator{
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AEAD: AuthenticatedLengthKeyAEAD,
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NonceGenerator: GenerateChunkNonce(s.requestBodyIV[:], uint32(aead.NonceSize())),
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AdditionalDataGenerator: crypto.GenerateEmptyBytes(),
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}
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sizeParser = NewAEADSizeParser(lengthAuth)
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}
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return crypto.NewAuthenticationWriter(auth, sizeParser, writer, request.Command.TransferType(), padding)
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case protocol.SecurityType_CHACHA20_POLY1305:
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@ -490,6 +524,18 @@ func (s *ServerSession) EncodeResponseBody(request *protocol.RequestHeader, writ
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NonceGenerator: GenerateChunkNonce(s.responseBodyIV[:], uint32(aead.NonceSize())),
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AdditionalDataGenerator: crypto.GenerateEmptyBytes(),
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}
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if request.Option.Has(protocol.RequestOptionAuthenticatedLength) {
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AuthenticatedLengthKey := vmessaead.KDF16(s.requestBodyKey[:], "auth_len")
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AuthenticatedLengthKeyAEAD, err := chacha20poly1305.New(GenerateChacha20Poly1305Key(AuthenticatedLengthKey))
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common.Must(err)
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lengthAuth := &crypto.AEADAuthenticator{
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AEAD: AuthenticatedLengthKeyAEAD,
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NonceGenerator: GenerateChunkNonce(s.requestBodyIV[:], uint32(aead.NonceSize())),
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AdditionalDataGenerator: crypto.GenerateEmptyBytes(),
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}
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sizeParser = NewAEADSizeParser(lengthAuth)
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}
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return crypto.NewAuthenticationWriter(auth, sizeParser, writer, request.Command.TransferType(), padding)
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default:
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@ -119,6 +119,10 @@ func (h *Handler) Process(ctx context.Context, link *transport.Link, dialer inte
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request.Option.Clear(protocol.RequestOptionChunkMasking)
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}
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if account.AuthenticatedLengthExperiment {
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request.Option.Set(protocol.RequestOptionAuthenticatedLength)
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}
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input := link.Reader
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output := link.Writer
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@ -1330,3 +1330,110 @@ func TestVMessZero(t *testing.T) {
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t.Error(err)
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}
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}
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func TestVMessGCMLengthAuth(t *testing.T) {
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tcpServer := tcp.Server{
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MsgProcessor: xor,
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}
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dest, err := tcpServer.Start()
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common.Must(err)
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defer tcpServer.Close()
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userID := protocol.NewID(uuid.New())
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serverPort := tcp.PickPort()
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serverConfig := &core.Config{
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App: []*serial.TypedMessage{
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serial.ToTypedMessage(&log.Config{
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ErrorLogLevel: clog.Severity_Debug,
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ErrorLogType: log.LogType_Console,
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}),
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},
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Inbound: []*core.InboundHandlerConfig{
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{
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ReceiverSettings: serial.ToTypedMessage(&proxyman.ReceiverConfig{
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PortRange: net.SinglePortRange(serverPort),
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Listen: net.NewIPOrDomain(net.LocalHostIP),
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}),
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ProxySettings: serial.ToTypedMessage(&inbound.Config{
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User: []*protocol.User{
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{
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Account: serial.ToTypedMessage(&vmess.Account{
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Id: userID.String(),
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AlterId: 64,
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}),
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},
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},
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}),
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},
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},
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Outbound: []*core.OutboundHandlerConfig{
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{
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ProxySettings: serial.ToTypedMessage(&freedom.Config{}),
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},
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},
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}
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clientPort := tcp.PickPort()
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clientConfig := &core.Config{
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App: []*serial.TypedMessage{
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serial.ToTypedMessage(&log.Config{
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ErrorLogLevel: clog.Severity_Debug,
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ErrorLogType: log.LogType_Console,
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}),
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},
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Inbound: []*core.InboundHandlerConfig{
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{
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ReceiverSettings: serial.ToTypedMessage(&proxyman.ReceiverConfig{
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PortRange: net.SinglePortRange(clientPort),
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Listen: net.NewIPOrDomain(net.LocalHostIP),
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}),
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ProxySettings: serial.ToTypedMessage(&dokodemo.Config{
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Address: net.NewIPOrDomain(dest.Address),
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Port: uint32(dest.Port),
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NetworkList: &net.NetworkList{
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Network: []net.Network{net.Network_TCP},
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},
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}),
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},
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},
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Outbound: []*core.OutboundHandlerConfig{
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{
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ProxySettings: serial.ToTypedMessage(&outbound.Config{
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Receiver: []*protocol.ServerEndpoint{
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{
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Address: net.NewIPOrDomain(net.LocalHostIP),
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Port: uint32(serverPort),
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User: []*protocol.User{
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{
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Account: serial.ToTypedMessage(&vmess.Account{
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Id: userID.String(),
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AlterId: 64,
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SecuritySettings: &protocol.SecurityConfig{
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Type: protocol.SecurityType_AES128_GCM,
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},
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TestsEnabled: "AuthenticatedLength",
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}),
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},
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},
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},
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},
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}),
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},
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},
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}
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servers, err := InitializeServerConfigs(serverConfig, clientConfig)
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if err != nil {
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t.Fatal("Failed to initialize all servers: ", err.Error())
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}
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defer CloseAllServers(servers)
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var errg errgroup.Group
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for i := 0; i < 10; i++ {
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errg.Go(testTCPConn(clientPort, 10240*1024, time.Second*40))
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}
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if err := errg.Wait(); err != nil {
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t.Error(err)
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}
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}
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